Electric Flanged Butterfly Valve

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Electric Flanged Butterfly Valve

Carbon Steel (WCB, WCC for strength), Stainless Steel (SS304, SS316 for corrosion resistance)

Size Range:2″ to 48″ (DN50-DN1200)

Connection Options:Flanged

Working Pressure:Up to 300 psi (20.7 bar)

Working Temperature:-29°C to 200°C

Sealing Options:EPDM, PTFE, Metal-to-Metal, NBR, FKM

Manufacturing Method:Cast, Forged, Machined

Applicable Medium:Water, Oil, Gas, Air, Chemical Fluids

Manufacturing Standard:API 609, ASME B16.47, MSS-SP-67, BS EN 593, ISO 5752

Product Overview

Butterfly valves regulate or isolate fluid flow in pipelines, making them ideal for situations requiring quick shutoff, low pressure drop, and easy operation. The butterfly valve operates with a rotating disc that allows for on/off or modulating service. Constructed from high-quality materials, including carbon steel, stainless steel, these valves are known for their durability, corrosion resistance, and suitability for various industrial applications.

Product Features

Quick Operation: Butterfly valves can be opened or closed quickly, often using a lever or actuator, allowing efficient flow control. This is particularly beneficial in industries like HVAC systems, fire protection systems, and chemical processing, where rapid flow adjustments are essential.

Low-Pressure Drop: The streamlined disc design ensures minimal resistance to flow, reducing pressure drop across the valve.

Compact and Lightweight: Butterfly valves are smaller and lighter compared to other types of valves, making them easy to install and maintain.

Versatile Connection Options: Available in wafer, lug, flanged, double flanged, and grooved connections to accommodate a wide range of piping configurations.

Resilient or Metal Seat Options: Offers both soft seats (e.g., EPDM, PTFE) for low-pressure applications and metal seats for higher temperatures and pressures.

Manual or Actuated Operation: Can be operated manually using a lever or automated with electric, pneumatic, or hydraulic actuators.

Specification Parameters

Structural Length Standard:
According to API 609, ASME B16.47, ISO 5752, BS EN 558

Connection Forms Standards:
Wafer and lug types per ASME B16.5, flanged per ANSI/ASME B16.42, double flanged, and grooved

Available Sizes (Caliber):
2″, 3″, 4″, 6″, 8″, 10″, 12″, 14″, 16″, 18″, 20″, 24″, 30″, 36″, 42″, 48″

Pressure-Temperature Rating:
Class 150, 300 as per API 609 and ASME B16.47

Pressure Range:
Up to 300 psi depending on size and material

Temperature Range:
-29°C to 200°C depending on material and sealing options

Model		D373H-10C~40	D373H-10P~40
		D373Y-10C~40	D373Y-10P~40
Work pressure（MPa）		1.0~4.0
Proper temperature（℃）		≤300
Suitable media		Water, oil, steam and so on
Material	Body, disc	Cast steel	Austenitic stainless steel
	Valve stem	40Cr	Austenitic stainless steel
	Sealing surface matching material	Stainless steel / stainless steel	Stainless steel / Secretary Stanley
	Filler	flexible graphite	Teflon

The main shape and connection size

Nominal diameterDN	Main dimensions			Flange size
	Main dimensions			1.0MPa		1.6MPa		2.5MPa
	L	H1	H	D1	n-Φd	D1	n-Φd	D1	n-Φd
50	43	255	340	125	4-18	125	4-18	125	4-18
65	46	280	370	145	4-18	145	4-18	145	4-18
80	49	285	385	160	4-18	160	4-18	160	4-18
100	56	310	430	180	4-18	180	4-18	190	4-22
125	64	310	440	210	4-18	210	4-18	220	4-26
150	70	315	475	240	4-23	240	4-22	250	4-26
200	71	380	590	295	4-23	295	4-22	310	4-26
250	76	460	710	350	4-23	355	4-26	370	4-30
300	83	475	725	400	4-23	410	4-26	430	4-30
350	92	510	830	460	4-23	470	4-26	490	4-33
400	102	550	900	515	4-25	525	4-30	550	4-36
450	114	590	970	565	4-25	585	4-30	600	4-36
500	127	610	1030	620	4-25	650	4-33	660	4-36
600	154	660	1150	725	4-30	770	4-36	770	4-39
700	165	730	1220	840	4-30	840	4-36	875	4-42
800	190	810	1300	950	4-34	950	4-39	990	4-48
900	203	930	1480	1050	4-34	1050	4-39	1090	4-48
1000	216	1020	1600	1160	4-34	1170	4-42	1210	4-56

Specification Applications

Industries

Water Treatment Plants: Used in water distribution and control systems for potable and wastewater treatment.
Oil & Gas Industry: Suitable for regulating the flow of crude oil, natural gas, and refined products.
Chemical Industry: Ideal for controlling the flow of chemicals, acids, and other aggressive fluids.
HVAC Systems: Commonly used in heating, ventilation, and air conditioning systems for regulating air or water flow.
Food & Beverage Industry: Suitable for sanitary and non-sanitary applications that require frequent operation and cleaning, thanks to corrosion-resistant materials and ease of cleaning.

Specific Applications

Cooling Water Systems: Controls the flow of water for cooling applications in industrial facilities.
Fire Protection Systems: Used in fire sprinkler systems as control valves to regulate water supply.
Process Pipelines: Ideal for modulating or isolating flow in pipelines carrying oil, gas, or chemicals.
Air Flow Regulation: Used in HVAC systems to regulate air flow, ensuring efficient operation of heating and cooling units.

Installation Instructions

Verify the valve size, pressure rating, and material compatibility with the pipeline and medium before installation.
Ensure proper alignment of the butterfly valve in the pipeline to avoid seat or disc damage.
Use appropriate flange gaskets and follow standard torque tightening procedures for flanged connections.
For wafer or lug connections, ensure correct bolt alignment to avoid stress on the valve body.
Test the valve for proper operation to ensure the disc moves freely without obstruction. If the disc does not move freely, check for proper alignment and inspect for debris that may be causing the obstruction. If issues persist, further troubleshoot by adjusting alignment or cleaning the valve thoroughly to remove any contaminants.

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

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